package chixing.day09.homework.work4;

public class MediaFileTest {
    public static void main(String[] args) {
        Music music = new Music("勋章", 4546D);
        Video video = new Video("mv", 67D);
        video.download("aaa");
        video.play();
        video.stop();

        music.download("bbb");
        music.play();
        music.stop();
    }
}
